在Bcr-Abl中准SH2-激酶接口可以抑制白血病发生
Florian Grebien1, Oliver Hantschel, John Wojcik
1Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.
Cell
|October 18, 2011
概括
准Bcr-Abl SH2-激酶接口会破坏慢性髓性白血病 (CML) 信号传递,并消除小鼠中的白血病. 这种全osteric 方法增强了耐药CML对氨酸激酶抑制剂 (TKIs) 的敏感性.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 慢性骨髓性白血病 (CML) 是由Bcr-Abl氨酸激酶驱动的.
- 伊马替尼和其他铁激酶抑制剂 (TKI) 是标准的CML治疗方法.
- TKI耐药性需要针对Bcr-Abl.的新型治疗策略.
研究的目的:
- 研究SH2-激酶域相互作用在Bcr-Abl活性中的作用.
- 探索SH2-激酶接口作为CML的潜在全性药物标.
主要方法:
- 生物化学测试以评估Bcr-Abl激酶活性.
- 在体内研究使用CML的小鼠模型.
- 开发和测试一个工程 Abl SH2 结合单体.
主要成果:
- 对于Bcr-Abl的催化活性来说,分子内SH2-激酶相互作用是必不可少的.
- 破坏这种接口会抑制CML信号传递,并防止小鼠的白血病形成.
- 准SH2-激酶接口使得对伊马替尼布耐药的Bcr-Abl突变体对TKI重新敏感.
- 一个工程化单体在体外和初级CML细胞中有效抑制Bcr-Abl,诱导细胞亡.
结论:
- Bcr-Abl SH2-激酶接口是一个关键的调节元件和一个可行的全性标.
- 破坏这种接口为克服CML中TKI阻力提供了一个有希望的策略.
- 针对这种接口的工程化单体显示出CML治疗的治疗潜力.
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